<template>
  <div>
    <div style="margin: 10px 0">
      <el-input placeholder="请输入名称" suffix-icon="el-icon-search" style="width: 200px" v-model="name"></el-input>
      <el-button type="primary" class="ml-5" @click="load">搜索</el-button>
      <el-button type="warning" style="margin-left: 2px" @click="reset">重置</el-button>
    </div>
    <el-upload style="display: inline-block" action="http://localhost:9090/file/upload"
               accept="xlsx" :on-success="handleFileUploadSuccess" :show-file-list="false">
      <el-button type="primary">上传文件<i class="el-icon-circle-plus-outline"></i></el-button>
    </el-upload>
    <el-popconfirm
        class="ml-5"
        confirm-button-text='确定'
        cancel-button-text='取消'
        icon="el-icon-info"
        icon-color="red"
        title="您确定批量删除这些数据吗？"
        @confirm="deleteBatch"
    >
      <el-button type="danger" slot="reference">批量删除<i class="el-icon-remove-outline"></i></el-button>
    </el-popconfirm>

    <el-table :data="tableData" border stripe :header-cell-class-name="'headerBg'"
              @selection-change="handleSelectionChange">
      <el-table-column
          type="selection"
          width="55">
      </el-table-column>
      <el-table-column prop="id" label="ID" width="80"></el-table-column>
      <el-table-column prop="name" label="文件名称" width="140"></el-table-column>
      <el-table-column prop="type" label="文件类型" width="120"></el-table-column>
      <el-table-column prop="size" label="文件大小(Kb)"></el-table-column>
      <el-table-column label="下载">
        <template slot-scope="scope">
          <el-button type="primary" @click="download(scope.row.url)">下载</el-button>
        </template>
      </el-table-column>
      <el-table-column label="启用">
        <template slot-scope="scope">
          <el-switch v-model="scope.row.enable" active-color="#13ce66" inactive-color="#ccc"
                     @change="changeEnable(scope.row)"></el-switch>
        </template>
      </el-table-column>
      <el-table-column label="操作">
        <template slot-scope="scope">
          <el-popconfirm
              class="ml-5"
              confirm-button-text='确定'
              cancel-button-text='取消'
              icon="el-icon-info"
              icon-color="red"
              title="您确定要删除吗？"
              @confirm="handleDelete(scope.row.id)"
          >
            <el-button type="danger" slot="reference">删除<i class="el-icon-remove-outline"></i></el-button>
          </el-popconfirm>
        </template>
      </el-table-column>
    </el-table>
    <div>
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="pageNum"
          :page-sizes="[2, 5, 10, 20]"
          :page-size="pageSize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
      </el-pagination>
    </div>
  </div>
</template>

<script>
export default {
  name: "File",
  data() {
    return {
      tableData: [],
      name: '',
      multipleSelection: [],
      total: 0,
      pageNum: 1,
      pageSize: 10,
    }
  },
  created() {
    this.load()
  },
  methods: {
    load() {
      this.request.get("/file/page", {
        params: {
          pageNum: this.pageNum,
          pageSize: this.pageSize,
          name: this.name,
        }
      }).then(res => {
        this.tableData = res.data.records
        this.total = res.data.total
      })
    },
    reset() {
      this.name = ""
      this.load()
    },
    handleDelete(id) {
      this.request.delete("/file/" + id).then(res => {
        if (res.code === '200') {
          this.$message.success("删除成功")
          this.load()
        } else {
          this.$message.error("删除失败")
        }
      })
    },
    handleSelectionChange(val) {
      console.log(val)
      this.multipleSelection = val
    },
    deleteBatch() {
      let ids = this.multipleSelection.map(v => v.id) // 扁平化处理，把对象数组调整为id数组 [{},{},{}]=>[1,2,3]
      this.request.post("file/del/batch/", ids).then(res => {
        if (res) {
          this.$message.success("批量删除成功")
          this.load()
        } else {
          this.$message.error("删除失败")
        }
      })
    },
    collapse() { //点击收缩按钮触发
      this.isCollapse = !this.isCollapse
      if (this.isCollapse) { //收缩
        this.sideWidth = 64
        this.collapseBtnClas = 'el-icon-s-unfold'
        this.logoTextShow = false
      } else {  //展开
        this.sideWidth = 200
        this.collapseBtnClas = 'el-icon-s-fold'
        this.logoTextShow = true
      }
    },
    handleSizeChange(pageSize) {
      console.log(pageSize)
      this.pageSize = pageSize
      this.load()
    },
    handleCurrentChange(pageNum) {
      console.log(pageNum)
      this.pageNum = pageNum
      this.load()
    },
    handleFileUploadSuccess() {
      this.load()
    },
    download(url) {
      window.open(url)
    },
    changeEnable(row) {
      this.request.post("/file/update", row).then(res => {
        if (res.code === '200') {
          this.$message.success("操作成功")
        }
      })
    }
  }
}
</script>

<style scoped>

</style>